IS there a way to keep the superscript footnote/endnote references in the
text of a document but delete the accompanying footnote/endnote text (but
keep in a separate file).

We're compiling an edited volume and the endnotes for each chapter will be
placed at the end of the book, but I can't remove them from each chapter
while preserving the superscript note reference in the text (short of
manually replacing each note reference point).